Always use parse.

Author: ioquatix

lib/protocol/http/headers.rb

@@ -413,11 +413,7 @@ def delete(key)
 					if current_value = hash[key]
 						current_value << value
 					else
-						if policy.respond_to?(:parse)
-							hash[key] = policy.parse(value)
-						else
-							hash[key] = policy.new(value)
-						end
+						hash[key] = policy.parse(value)
 					end
 				else
 					# By default, headers are not allowed in trailers:

test/protocol/http/headers.rb

@@ -384,6 +384,10 @@
 		# Create a custom header class that allows trailers
 		let(:grpc_status_class) do
 			Class.new(String) do
+				def self.parse(value)
+					new(value)
+				end
+				
 				def self.trailer?
 					true
 				end